package com.admin.framework.web.exception;

import com.admin.common.core.domain.AjaxResult;
import com.admin.common.exception.BusinessException;
import com.admin.common.exception.DemoModeException;
import com.admin.common.utils.ServletUtils;
import com.admin.common.utils.security.PermissionUtils;
import org.apache.shiro.authz.AuthorizationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;

/**
 * 全局异常处理器
 *
 * @author fangchen
 */
@RestControllerAdvice
public class GlobalExceptionHandler {
    private static final Logger log = LoggerFactory.getLogger( GlobalExceptionHandler.class );

    /**
     * 权限校验失败 如果请求为ajax返回json，普通请求跳转页面
     */
    @ExceptionHandler(AuthorizationException.class)
    public Object handleAuthorizationException(HttpServletRequest request, AuthorizationException e) {
        log.error( e.getMessage(), e );
        if (ServletUtils.isAjaxRequest( request )) {
            return AjaxResult.error( PermissionUtils.getMsg( e.getMessage() ) );
        } else {
            ModelAndView modelAndView = new ModelAndView();
            modelAndView.setViewName( "error/unauth" );
            return modelAndView;
        }
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler({HttpRequestMethodNotSupportedException.class})
    public AjaxResult handleException(HttpRequestMethodNotSupportedException e) {
        log.error( e.getMessage(), e );
        return AjaxResult.error( "不支持' " + e.getMethod() + "'请求" );
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public AjaxResult notFount(RuntimeException e) {
        log.error( "运行时异常:", e );
        return AjaxResult.error( "运行时异常:" + e.getMessage() );
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public AjaxResult handleException(Exception e) {
        log.error( e.getMessage(), e );
        return AjaxResult.error( "服务器错误，请联系管理员" );
    }

    /**
     * 业务异常
     */
    @ExceptionHandler(BusinessException.class)
    public Object businessException(HttpServletRequest request, BusinessException e) {
        log.error( e.getMessage(), e );
        if (ServletUtils.isAjaxRequest( request )) {
            return AjaxResult.error( e.getMessage() );
        } else {
            ModelAndView modelAndView = new ModelAndView();
            modelAndView.addObject( "errorMessage", e.getMessage() );
            modelAndView.setViewName( "error/business" );
            return modelAndView;
        }
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(BindException.class)
    public AjaxResult validatedBindException(BindException e) {
        log.error( e.getMessage(), e );
        String message = e.getAllErrors().get( 0 ).getDefaultMessage();
        return AjaxResult.error( message );
    }

    /**
     * 演示模式异常
     */
    @ExceptionHandler(DemoModeException.class)
    public AjaxResult demoModeException(DemoModeException e) {
        return AjaxResult.error( "演示模式，不允许操作" );
    }
}
